Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Drugs Acting on Autonomic Ganglia: Stimulants

Drugs Acting on Autonomic Ganglia: Stimulants

Ganglionic stimulants activate NM nicotinic receptors in autonomic ganglia, falling into two categories: nicotine mimetics [e.g., lobeline, dimethylpiperazine, tetramethylammonium] and muscarinic receptor agonists [e.g., muscarine, methacholine]. The first category's action is rapid and blocked by nicotinic receptor antagonists, while the second category's action is delayed and blocked by atropine-like agents. Nicotine, an alkaloid, affects the heart rate by stimulating sympathetic or...

Antiasthma Drugs: β2-Adrenoceptor Agonists

Antiasthma Drugs: β₂-Adrenoceptor Agonists

Bronchodilators are critical in managing asthma, a chronic respiratory condition characterized by airway constriction due to inflammation and hyper-reactivity. Specifically, bronchodilators ease this constriction by relaxing the bronchial muscles, facilitating easier breathing.
One class of bronchodilators includes β2-adrenoceptor agonists. These agents target the β2-adrenoceptors located on bronchial smooth muscle cells. By stimulating these receptors, β2-agonists induce relaxation in these...

Asthma-I: Introduction

Asthma-I: Introduction

Asthma is a chronic respiratory ailment that requires careful management due to its varying symptoms and influencing factors. It is characterized by airway inflammation, bronchial hyperresponsiveness, and reversible airflow obstruction, leading to symptoms like wheezing, shortness of breath, chest tightness, and coughing. The symptom frequency and intensity may vary considerably over time. It is also linked to immune system responses to allergens and irritants, highlighting the complex...

Asthma-III: Symptoms and Complications

Asthma-III: Symptoms and Complications

Asthma, a common chronic respiratory condition, is classified considering the frequency and severity of symptoms alongside lung function impairment. Understanding this classification is essential for appropriate treatment and management. Here's a detailed look at the classification of asthma and its clinical features and complications:
Classification of Asthma

Asthma I: Introduction

Asthma I: Introduction

Asthma is a chronic inflammatory disorder of the airways characterized by variable airflow obstruction and heightened bronchial responsiveness to a wide range of triggers. The underlying inflammation leads to airway swelling, mucus hypersecretion, and smooth muscle constriction, all of which narrow the airway lumen and impede airflow. Clinically, asthma presents with recurrent episodes of wheezing, shortness of breath, chest tightness, and coughing, symptoms that typically vary in intensity and...

Asthma III: Clinical Manifestations

Asthma III: Clinical Manifestations

Asthma presents with a characteristic pattern of episodic respiratory symptoms that reflect underlying airway inflammation, bronchoconstriction, and mucus hypersecretion. Although severity varies among individuals, certain clinical manifestations are considered hallmarks of the disorder and often guide diagnosis and assessment.Respiratory SymptomsA persistent cough is one of the most common early features of asthma. It is frequently dry and tends to worsen at night or in the early morning,...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

How much do outpatients know about drugs prescribed to them? A pilot study.

Papua and New Guinea medical journal·1993

Same author

Drugs in the home: danger and waste.

World health forum·1993

Same author

Slaked lime and betel nut cancer in Papua New Guinea.

Lancet (London, England)·1992

Same author

Betel nut chewing and asthma.

Lancet (London, England)·1992

Same author

Compliance profiles of paediatric patients in an outpatient department.

Papua and New Guinea medical journal·1992

Same author

Ewing's sarcoma: fifteen years' experience at Angau Memorial Hospital.

Papua and New Guinea medical journal·1990

Search research articles

Related Experiment Video

Updated: Jul 21, 2026

Acupuncture in a Rat Model of Asthma

Acupuncture in a Rat Model of Asthma

Published on: August 25, 2020

Betel-nut chewing may aggravate asthma.

¹Faculty of Medicine, University of Papua New Guinea, Port Moresby.

Papua and New Guinea Medical Journal

|June 1, 1991

Summary

Asthma patients frequently report betel nut chewing aggravates their condition. Many who quit betel nut use did so due to worsening asthma symptoms, suggesting a link.

Area of Science:

Respiratory Medicine
Public Health

Background:

Asthma is a chronic respiratory condition affecting millions globally.
Betel nut chewing is a common practice in many parts of the world, with potential health implications.

Purpose of the Study:

To investigate the association between betel nut consumption and asthma exacerbation.
To provide preliminary evidence for advising asthma patients on betel nut use.

Main Methods:

A questionnaire survey was conducted among 61 asthma patients at Port Moresby General Hospital.
Patients were queried about their history of betel nut chewing and its perceived effect on their asthma.

Main Results:

54 out of 61 asthma patients reported past or current betel nut chewing.

More Related Videos

A Traditional Chinese Medicine Characteristic Therapy for Bronchial Asthma: Moxibustion

A Traditional Chinese Medicine Characteristic Therapy for Bronchial Asthma: Moxibustion

Published on: May 12, 2023

Auricular Acupressure as an Adjuvant Treatment for Wheezing in Stable Chronic Obstructive Pulmonary Disease

Auricular Acupressure as an Adjuvant Treatment for Wheezing in Stable Chronic Obstructive Pulmonary Disease

Published on: May 10, 2024

Related Experiment Videos

Last Updated: Jul 21, 2026

Acupuncture in a Rat Model of Asthma

Acupuncture in a Rat Model of Asthma

Published on: August 25, 2020

A Traditional Chinese Medicine Characteristic Therapy for Bronchial Asthma: Moxibustion

A Traditional Chinese Medicine Characteristic Therapy for Bronchial Asthma: Moxibustion

Published on: May 12, 2023

Auricular Acupressure as an Adjuvant Treatment for Wheezing in Stable Chronic Obstructive Pulmonary Disease

Auricular Acupressure as an Adjuvant Treatment for Wheezing in Stable Chronic Obstructive Pulmonary Disease

Published on: May 10, 2024

A significant number of patients (11/20 who quit, 22/34 current chewers) reported asthma aggravation linked to betel nut use.

Anecdotal evidence suggested dose-response relationships between chewing methods and asthma severity.

Conclusions:

Betel nut chewing may aggravate asthma symptoms in susceptible individuals.
Asthma patients should be cautioned about the potential negative impact of betel nut consumption on their respiratory health.